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Join Date: Nov 2012
Location: Yuba City
Thanked 281 Times in 241 Posts
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there is not black or white answer to your question...
tons of guys never blow a headgaske with hot tunes and some blow stock like mine...
read the "monitoring 6.0" under the 6.0 section of forum and check your vitals. if you have a heavy foot say goodbye to your trans soon.
sell it and get an sct tuner the best i get is 13ish town and almost 17 highway but thats stock tuning and pretty good for a big truck id say.
when i ran my hot tunes i couoldnt keep my foot out of throttle long enough to check mpg so i put it back to stock before i got pulled over lol...
you can find used sct tuners cheap here.
currently-1999 F250 SBRB 4X4 7.3, 6.0 trans cooler, 08 mirrors, AIS Intake, Hydra, Level kit, 33s.
-2004 F350 CCLB 4x4: Sinister Race solutions kit, CAT ELC Edge CS, SCT SF3, PHP Ficm programmer, Procomp, Rough country, and Nitto goodies.
-2004 excursion, banks exhaust, 03 turbo, aem intake. 4in lift, 35in kumhos
-2006 f350 king ranch, aem intake, 10 in fabtech, 40in tires, sct tunes.
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